Which component is common in spill prevention measures for USTs?

Spill catchment basins are an integral component of spill prevention measures for Underground Storage Tanks (USTs) because they are specifically designed to contain any spills or leaks that might occur during the transfer of liquids into the tank. These basins serve to collect and hold any spilled product, preventing it from reaching the surrounding environment, which is essential for reducing the risk of soil or water contamination.

In the context of UST operations, catchment basins are strategically placed to capture accidental releases during operations such as filling the tank or transferring fuel, thus mitigating potential hazards. They are an essential part of regulatory compliance regarding UST safety standards and environmental protection.

While the other options—emergency response teams, ventilation systems, and waste disposal units—play important roles in general safety and management practices within UST systems, they are not directly classified as spill prevention measures. Emergency response teams are employed after a spill occurs, ventilation systems are crucial for managing air quality and vapors, and waste disposal units deal with the management of waste rather than the prevention of spills. Therefore, spill catchment basins directly address the need for proactive spill prevention strategies.